Car-truck.



"PATENTEDAPR. 14, 1903;

G. G. FLOYD.

GAR TRUCK.

APPLICATION FILED JULY 5, 1902.

N0 MODEL.

.ATENT CFFICE.

GEORGE c. FLQYD,OF,ST.-LOUIS,1MISSQDYRIEASSIGNOR TOWUNITED STATESRAILWAY EQUIPMENT OOMPANY, oEsT.'-LoUIs,- MISSOURI, A CORPORA- TION.

CAR-TRUCK.

SPECIFICATION forming part of Letters 'taent 110.7%,329, dated A ril 14,1903.

Application filed July 5, 1902. $e1ia1No. 114,468. (No model.)

To all whmn it may concern;

Be it known that I,G-EORGE G. FLoYD,a citizen of the United States,residing in the city of St. Louis,in the State of Missouri, haveinvented certain new and useful Improvements in Gar-Trucks, of which thefollowingis a full, clear, and exact description, reference being had tothe accompanying drawings, forming part of this specification.

My invention relates to an improved manner of. putting together the sideframes and the bolsterof a railway-truck, my object being to reduce thecost of the fitting of the parts.

With this object in view my invention consists in features of noveltyhereinafter fully described, and pointed out in the claims.

Figure I is a side view of the side frame, showing part of the bolster.Fig. II is a top or plan View, part in section. Fig. III is an enlargeddetail vertical section taken on line III III, Fig..II. section taken onlineIV IV, Fig-III. Fig. V is a detail perspective view showing part ofthe side frame. Fig. VI is a detail vertical section showing amodification.

Referring to the drawings, 1 represents the side frame of a car-truck,and 2 the bolster, both made of cast metal. v

Heretofore it has been customary and necessary to plane the entirecontacting surfaces between the bolster and the side frames in order toget a sufficien tly smooth and close bearing between the two. Thisinvolved considerable labor and expense, owing to the time required todo the work. To avoid this large amount of labor, and thereby save timeand cheapen the cost of manufacturing the truck, I cast the sideframeswith projections or studs 3, and I cast the bolsterwith correspondingrecesses 4, the former fitting within the recesses.

Fig. IV is a detail vertical projections or studs and the side frameswith Before putting the parts together the studs are planed or groundoff by the use of a special tool, and the recesses are in like mannersmoothed up, so that when the parts are put together there willbe aclose rsmooth bearing betweenthese parts.- When the parts are fittedtogether, they areheld by rivets or bolts 5, preferably passed throughthe sideframes and bolsterat the. projections 3, as shown in thedrawings. The projections are made of sufficient height to holdthe mainsurfaces of the bolster out of contact with the side frames, as shownat'6, and it thus becomes unnecessary to plane or smooth oif the mainportions ofthe bolster and side" frames (which may be left rough, asshown in .Fig. V) where they would come together in the absence of theprojections, and the time and labor required to fit the parts together'is thus greatly reduced.

= .-In Figs- I to V, I have shown. the .pro'j .tions 3 formed integralwith'the side frames 5 1 'butfif preferred, separate projections orwashers 7 maybe used, as'shoWninFig. VI,

these projections'or washers being received by recesses formed both "inthe side frames.

and in the bolster.

I claim as my invention- 1. In a car-truck, the combination of a sideGEORGE G. FLOYD.

In presence of E; S. KNIGHT, M. P. SMITH.

